One of the year's most interesting compacts comes in the form of the Canon PowerShot G7 X, which bears a 20MP 1-inch BSI CMOS sensor. It's not just the bigger, likely Sony-branded sensor that's the G7 X's attraction, it's also the 24-100mm equivalent F1.8-2.8 lens. On paper it's a serious rival to Sony's RX100 series, widely considered class leaders in terms of compact camera image quality. Does the G7 X live up to its impressive spec sheet?